The present invention relates to a method of engaging tissue that, for example, can be used to guide a surgical instrument or other implement. An inflatable element is positioned in a patient's body, the flow of fluid to the inflatable element is controlled with a microprocessor, and tissue is engaged...http://www.google.com.au/patents/US6607534?utm_source=gb-gplus-sharePatent US6607534 - Tissue engagement method
